#!/usr/bin/env python
"""NumPy: array processing for numbers, strings, records, and objects.

NumPy is a general-purpose array-processing package designed to
efficiently manipulate large multi-dimensional arrays of arbitrary
records without sacrificing too much speed for small multi-dimensional
arrays.  NumPy is built on the Numeric code base and adds features
introduced by numarray as well as an extended C-API and the ability to
create arrays of arbitrary type which also makes NumPy suitable for
interfacing with general-purpose data-base applications.

There are also basic facilities for discrete fourier transform,
basic linear algebra and random number generation.

"""
from __future__ import division, print_function

DOCLINES = __doc__.split("\n")

import os
import sys
import subprocess


if sys.version_info[:2] < (2, 6) or (3, 0) <= sys.version_info[0:2] < (3, 2):
    raise RuntimeError("Python version 2.6, 2.7 or >= 3.2 required.")

if sys.version_info[0] >= 3:
    import builtins
else:
    import __builtin__ as builtins


CLASSIFIERS = """\
Development Status :: 5 - Production/Stable
Intended Audience :: Science/Research
Intended Audience :: Developers
License :: OSI Approved
Programming Language :: C
Programming Language :: Python
Programming Language :: Python :: 3
Topic :: Software Development
Topic :: Scientific/Engineering
Operating System :: Microsoft :: Windows
Operating System :: POSIX
Operating System :: Unix
Operating System :: MacOS
"""

MAJOR               = 1
MINOR               = 10
MICRO               = 0
ISRELEASED          = False
VERSION             = '%d.%d.%d' % (MAJOR, MINOR, MICRO)


# Return the git revision as a string
def git_version():
    def _minimal_ext_cmd(cmd):
        # construct minimal environment
        env = {}
        for k in ['SYSTEMROOT', 'PATH']:
            v = os.environ.get(k)
            if v is not None:
                env[k] = v
        # LANGUAGE is used on win32
        env['LANGUAGE'] = 'C'
        env['LANG'] = 'C'
        env['LC_ALL'] = 'C'
        out = subprocess.Popen(cmd, stdout = subprocess.PIPE, env=env).communicate()[0]
        return out

    try:
        out = _minimal_ext_cmd(['git', 'rev-parse', 'HEAD'])
        GIT_REVISION = out.strip().decode('ascii')
    except OSError:
        GIT_REVISION = "Unknown"

    return GIT_REVISION

# BEFORE importing distutils, remove MANIFEST. distutils doesn't properly
# update it when the contents of directories change.
if os.path.exists('MANIFEST'): os.remove('MANIFEST')

# This is a bit hackish: we are setting a global variable so that the main
# numpy __init__ can detect if it is being loaded by the setup routine, to
# avoid attempting to load components that aren't built yet.  While ugly, it's
# a lot more robust than what was previously being used.
builtins.__NUMPY_SETUP__ = True


def get_version_info():
    # Adding the git rev number needs to be done inside write_version_py(),
    # otherwise the import of numpy.version messes up the build under Python 3.
    FULLVERSION = VERSION
    if os.path.exists('.git'):
        GIT_REVISION = git_version()
    elif os.path.exists('numpy/version.py'):
        # must be a source distribution, use existing version file
        try:
            from numpy.version import git_revision as GIT_REVISION
        except ImportError:
            raise ImportError("Unable to import git_revision. Try removing " \
                              "numpy/version.py and the build directory " \
                              "before building.")
    else:
        GIT_REVISION = "Unknown"

    if not ISRELEASED:
        FULLVERSION += '.dev-' + GIT_REVISION[:7]

    return FULLVERSION, GIT_REVISION


def write_version_py(filename='numpy/version.py'):
    cnt = """
# THIS FILE IS GENERATED FROM NUMPY SETUP.PY
short_version = '%(version)s'
version = '%(version)s'
full_version = '%(full_version)s'
git_revision = '%(git_revision)s'
release = %(isrelease)s

if not release:
    version = full_version
"""
    FULLVERSION, GIT_REVISION = get_version_info()

    a = open(filename, 'w')
    try:
        a.write(cnt % {'version': VERSION,
                       'full_version' : FULLVERSION,
                       'git_revision' : GIT_REVISION,
                       'isrelease': str(ISRELEASED)})
    finally:
        a.close()


def configuration(parent_package='',top_path=None):
    from numpy.distutils.misc_util import Configuration

    config = Configuration(None, parent_package, top_path)
    config.set_options(ignore_setup_xxx_py=True,
                       assume_default_configuration=True,
                       delegate_options_to_subpackages=True,
                       quiet=True)

    config.add_subpackage('numpy')

    config.get_version('numpy/version.py') # sets config.version

    return config

def check_submodules():
    """ verify that the submodules are checked out and clean
        use `git submodule update --init`; on failure
    """
    if not os.path.exists('.git'):
        return
    with open('.gitmodules') as f:
        for l in f:
            if 'path' in l:
                p = l.split('=')[-1].strip()
                if not os.path.exists(p):
                    raise ValueError('Submodule %s missing' % p)


    proc = subprocess.Popen(['git', 'submodule', 'status'],
                            stdout=subprocess.PIPE)
    status, _ = proc.communicate()
    status = status.decode("ascii", "replace")
    for line in status.splitlines():
        if line.startswith('-') or line.startswith('+'):
            raise ValueError('Submodule not clean: %s' % line)

from distutils.command.sdist import sdist
class sdist_checked(sdist):
    """ check submodules on sdist to prevent incomplete tarballs """
    def run(self):
        check_submodules()
        sdist.run(self)

def generate_cython():
    cwd = os.path.abspath(os.path.dirname(__file__))
    print("Cythonizing sources")
    p = subprocess.call([sys.executable,
                          os.path.join(cwd, 'tools', 'cythonize.py'),
                          'numpy/random'],
                         cwd=cwd)
    if p != 0:
        raise RuntimeError("Running cythonize failed!")

def setup_package():
    src_path = os.path.dirname(os.path.abspath(sys.argv[0]))
    old_path = os.getcwd()
    os.chdir(src_path)
    sys.path.insert(0, src_path)

    # Rewrite the version file everytime
    write_version_py()

    metadata = dict(
        name = 'numpy',
        maintainer = "NumPy Developers",
        maintainer_email = "numpy-discussion@scipy.org",
        description = DOCLINES[0],
        long_description = "\n".join(DOCLINES[2:]),
        url = "http://www.numpy.org",
        author = "Travis E. Oliphant et al.",
        download_url = "http://sourceforge.net/projects/numpy/files/NumPy/",
        license = 'BSD',
        classifiers=[_f for _f in CLASSIFIERS.split('\n') if _f],
        platforms = ["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"],
        test_suite='nose.collector',
        cmdclass={"sdist": sdist_checked},
    )

    # Run build
    if len(sys.argv) >= 2 and ('--help' in sys.argv[1:] or
            sys.argv[1] in ('--help-commands', 'egg_info', '--version',
                            'clean')):
        # Use setuptools for these commands (they don't work well or at all
        # with distutils).  For normal builds use distutils.
        try:
            from setuptools import setup
        except ImportError:
            from distutils.core import setup

        FULLVERSION, GIT_REVISION = get_version_info()
        metadata['version'] = FULLVERSION
    else:
        if len(sys.argv) >= 2 and sys.argv[1] == 'bdist_wheel':
            # bdist_wheel needs setuptools
            import setuptools
        from numpy.distutils.core import setup
        cwd = os.path.abspath(os.path.dirname(__file__))
        if not os.path.exists(os.path.join(cwd, 'PKG-INFO')):
            # Generate Cython sources, unless building from source release
            generate_cython()
        metadata['configuration'] = configuration

    try:
        setup(**metadata)
    finally:
        del sys.path[0]
        os.chdir(old_path)
    return


if __name__ == '__main__':
    setup_package()
